Both my caching buddy and I have delormes (me PN-20, him PN-40) and macs. The 40 is clearly a superior machine for convenience and memory, but you pay extra. YMMV. That said, once you download the patch from Delorme, downloading cache sites to your hand held is painless. My biggest complaint is that, because we are a smaller slice of the market, developers are slow to update software for OSX. If that is a big deal, and you are happily using a PC, you may want to do your computer work on your PC and not deal with the frustration of being the stepchild...